Theres not a hard bottle out there thats cleaner, greener, and more flexible than a Platypus SoftBottle. Each one comes with the Clean-Taste Guarantee and its made with zero BPA. The SoftBottle is green, too, because its ultra-reusable and lightweight, it uses less energy and materials to make. Finally, your SoftBottle defines flexible. It fits in a drink holder, a round pocket, a flat pocket, or any hand. When empty, it rolls up and fits anywhere you want it to fit. Plus, it weighs 80% less than hard hydration bottles.